Rotary hoe



C. F. BAUER ROTARY HOE March 4, 1930.

2 Sheets-Sheet l- Filed Jan. 28, 1928 w V @um C. F. BAUER March 4, 1930.

ROTARY HOE 2 Sheets-Sheet 2 Filed Jan. 28. 1928 .Znvznfmr @M1 yf. 6W,

Murmel/'5 Patented Mar.y 4,1930

ps'Y'rATES,k PATENT OFFICE jcAIIfr.y BAUER', yor Iz-ocx ISLAND, ILLINOIS, AssIGNoa. tro DEER-E & COMPANY, or f MoLINE,1.ILLINoIs, A CORPORATION or ILLINOIS AROTARY' Hon yApplicatiirfiledJanuary 28, 1928. Serial N'o..250,205.

The present inventionrelates toi thattype offcultivatingimplement commonly referred lto `as a rotary-hoesuch implementsbeing n usuallycharacterized by two transversely ex- -rftendingshafts on which: closely spaced rotating vhoe fwheels areimounted, the latter havinfg long, radially extending teeth adaptedv to enter the soilin the forward rollingmotion oflthe hoe'fwheelsover the ground; Suchv implements yare frequently used inthe cultivationof corn vand'lilre plants, having part-icullaryutility for breaking .up lcrusty soil in theflrst or second cultivating operations.`

Implements of vthis type are ygenerally prof l.vided with adjustable supporting wheels which serve'to govern the vdepth ofp'enetra-y ytion ofthe hoe wheels, andwhich also serve to support the series of hoe 'wheels at yan elevated position, clear ofthe ground, when the .implement is tobetransported to or from the 1 field.

One of theobjects of the invention is to provide an improved mounting for each of these supporting wheels, which will aord a lmore,chirable andsub'stantial ysupport for the Wheel', and f which will enableythe construction of the implement tofbe simplifiedandcheapened.

vAnother object'of the invention is yto. pro-A a lvide an improvedv constructionV and arrange ment of the intermediate .bearings for the two i shafts on which the hoe wheels aremounted.

The wheels on one shaft are usually staggered or offset longitudinally with reference to the "wheels ont'he other shaft, so that the two .u .series of hoe-'wheels will cultivate along closely spaced lines. *This staggered relation i of the hoe wheels has heretofore made it diilif' cult to provide intermediate bearing supports for the'two shafts, necessitating, for'example that thehoe wheels be` separated into laterally spaced `gangsto accommodate the intermediate bearings onthe shafts, or necessitating the :use of speciallyA designedvhoe wheelsfor Alfil.

mountingon the shafts yin `proximity to the v`intermediate bearings, such specially designed y.wheels differing from `the other wheels ofthe l implement and thereby/necessitating theuse of two or more types of wheels. The present yconstruction Vaims `toavoidthese objections,

1thesame permitting the hoe wheelstobearranged in substantially uniform spacing across the entire width of the implement, and

permitting Athe use of a single design of hoe wheel at all points in the implement, thereby avoiding the expense and inconvenience of employing wheels of dierent designs at differentpoints in the implement. The present construction also permits of the use of hoe wheelsk having relatively long hub members extending therefrom, Aand preferably on opposite sides thereof, such hub members giv-y ing an extended area of support of the wheel on the shaft, which is desirable.

Other objects and advantages of the invention will appearin the 4following description of a preferred embodiment thereof. In the accompanying drawings illustrating such em-y bodiment: v

Fig. l isa plan view of the implement. Fig.v 2 is a rear elevational View thereof, illustrating the hoe wheels lowered fora cultivating operation.

Fig. 3 is a detail plan View showingthe ystaggered or offset relation of the intermea transversely extendingrear angle bar 2,

which angle bars are connected at their ends by longitudinally extending vframe members 3, as best shown in Fig. 4. The latter frame .n members are substantially Ushaped and have horizontally bent flange ends 3 (Fig. 5) which underliefthe horizontal flanges of the angle bars l and 2, and which are suitably secured thereto. The intermediate portions of the angle bars l and 2 are braced by another longitudinally extending frame member 4,

which is also U-shaped with laterally bent end portions 4k which are secured to the horizontal flanges of the angle bars. rlhis intermediate framemember is preferably disposed substantially in the center of the implementV rvframe, and the horizontal cross bar portion y 1oA thereof Vis' preferably located slightly higher than thecorresponding portions ofthe side members 3--.for..permitting the two .hoe shafts to be extended below said intermediate frame member, as will be presently described.

*Zlhg-iffrontA and rear angle barsl and'2 are constructionV toy receive y.the rear.v end of al draft pole 7. The draftpole is pivot-ally conneetedin the, bracket 6 on abolt 8 which extends-.through the bracket andthrough the poles] Thev draft pole-is connected kto`v the front-portion ofthe frame by. an inverted U-shapedpbracket, or, stirrup 9, Which-is secured-,tothe centralboards andtothej front angle bar l. The latterbracketf is con;- structedtop ermitl the draftv pole't-o be ad- .justed vertically. therein, the pole-in` such adjustment pivoting about-the: rear bolt 8..

'llosupport the pole inany of its desired adjustments., the bracket is provided Withlagseef ries of'holes 10 ,to` receive abolt 1l which is vadaptedto pass througha transverse openingin the pole 7. Any; suitable arrangement of draft devices 12.*is. connected to ,thel draft.pole;. preferably, on the under side thereofg; as; best; shown in Fig; 4.. A seat.,v

spring 13 is securedto the upperfside of Ithe .dragf t.pole, and; supports a drivers seat 14. The Asoil Working devices or rotaryhoes consist .of Wheels l5. having long,- pointed teeth adaptedto penetrate the-ground, as best shownv in Fig. 4f.. The. hoeW-heels are arranged infront andgrear rows lor series, with' the Wheels` of onejgseries disposed in staggeredoroSet relation `with respectto the Wheels of theother series, Vas best shown in Figs. 3 and 5. 'It-Willalso be noted thatthe l tWo seriesof Wheelsoverlap each other transversely'off'the implement. rlhe'ffront series ofWheels is mounted on a shaft l'which extends transversely across the entire Width of theimplement frame. e The end portions of said shaft extend throughopenings -inA` thek side*v frame members, andare supported'in,V bearings 17 which arecarried by these frame.l

members.A As shown in Fig. Ll, thebearings 17 have mounting" flanges 17Tv which are ybolted or Votherwise secured to .the outer: sides of theframeqmembers 3;.; The ends of theshaft 16. project outwardly Vbeyond the side yeritremities-ofthe framefand beyondithe bear# ing members 17 y,as indicated'at.16?L in Fig.

5 for mountinothe suanortind A4Wheels asVV Will be presently described.A The rear series of hoe Wheels is mounted upon a shaft 19v Which also extends transversely across the Yentire Width of the implementV frame and which has itsy ends passing through 0pen-V ings in the sidevframe members 3. I The'ends f of this shaft are supported in bearings 20 Which arek also'providedwith laterally'e tending attaching flanges or ears-Q0` adapted to be bolted-or otherwise secured to thev outer sides of the lframe members 3, as illustrated in detailin Fig. 6.

The shaft 19 is held.

against endvfise displacement fromv the bearings HZ0 byv any suitable device"'such as La cotter pin; passing through Veachl end of the 1 shaft;

` `As previously remarked. the` horizontally extending l'portion of; the intermediate frame member.; 4; is disposed: above .the lfrontandv rear; shafts 16 .and 19. Thetwo'shaftshave bearing support on this 'intermediateframe member; through. bearing. brackets.l or hang- 1 ers. which depend fronrtheframe member7` the bearmgmember for the front shaft being designated; 2ly and the bearing member.r for;l

vthe rear shaft being designated 22 (Fig.

It will be noted that-theframe member.l L is. i

disposed in; au longit-ujdinalplane bet-Ween one of the hoelwheelson the; frontshaftand one.Y of the hoe Wheels ontheL rear shaft. Byreason of the fact thatfthek horizontal. portionl of. this-frame vmember is disposed;abovetheV plane oftheshafts, the frame member-proper Y does notinterfere i withV the -shafts nor with.

the .Wheels mounted thereonrand. such relaf Y,

l.tionof the frame vmemberl! permits the beanv ingmemberlto be extendedlaterally from;

the framemember.toengagethefrontfShaft'.4 A

16k equidistantly,between .adjacent hoe -vvheeljsmounted thereon and also permits4 the bearing member" 22 to be extended laterally in l the opposite direction-toengage the rear shaft l-Qbetween adjacenthoe Wheels mounted on this latterI shaft.. The degree of lateral bers'QlfandQQ thus corresponds to the lon'-v gitudinal. disa'linement or offset 'between thek front Wheels and the rear Wheels. 'I Asshown iny Fig. 7 each intermediate bearing bracket 'has a depending. arm portion in which ispro- L vided a bearing aperture for receiving the4 .Y

hoe shaft.` The: upwardly extendingarm of each bearing bracket has a4 recessor scarfv formed in one' side thereof;for-embracingthe bolt 23.

i extensions-or offset of the two bearing'mem- "side and loweredge of the frame bar 4,V such f armbemgy secured to the frame bar by the' Each hoeY Wheel ris mounted: upon. a; rela.-l i

tively` longhub 15a which preferablyY extends laterallya'n equal distance from eachfsideof the Wheel.VK SuchY hub affords'. an extended Y area offsupport for eachvv-heel on-its shaft 16 or 19. Fromzthefside of the `frame tot-hef intermediate portion thereof; the lhubs .15. en

gage directly with each other endto endand thereby 'function as spacer members kfor the hoewheels. At the intermediate portion of Y the frametlievhubs 'ofthe two intermediate ,hoev wheels ony ,the rear shaft are spaced Y slightly by the interposition of thebearing bracket22, .the hubs bearing against oppoposition of ythe intermediate bearing bracket 21. f lBy reason of -theoffset relation of these site `sides of said bracket, and, correspondingly, the hubs of the two adjacent wheels on the front shaft are spaced 'slightly by the interl 5 two bearingbracket's such spacing occurs between front and rea-repairs of wheels which are/adj acentvto each other, and hence the unif form vstagger of all of thewheels acrosstlie entire width of the 'machinc, with the rear wheels .disposed equidistantly between the l front wheels,- is ynot disturbed.

Y rllhus all of thehoewheels used in the construction of the machine are exact duplicatesA and are ignter,V

changeable, thereby avoiding the expense and otherzobjections incident tothe use of two or f `more differently designed wheels in the implement. .The wheels at lthe ends of the rear series preferably havetheir hubs bearing directlyagainst-the inner sides of the lateral frame* members 3. The end wheelswof theA front series have their hubs terminatingfa @slight distance from such framemembers,

owingto the stagger of the wheels, and such space'at neach. end of the lfront series is taken upk byarspacing member `17 F1, which. preferably'constitutes' an inward; extension -of the end bearingl?, ralthough such spacing mem-` n ybei1 may consist of La spool or sleeve*v mounted l suflice yfor bot-h. Each ywheel is mounted,

on the front shaftbetween the hub of theend wheel and the inner side of the lateral frame member3. g 4For limiting thedepth of penetration of lthehoe wheels 15,-{and1 for transporting the implementato and fromr the field, supporting `wheels 24`are ymounted at-each yside of the implement.` Inasmuch as the mounting of these wheels, andthe mechanism for adjustingxthe same, is the same at both sidesof the implement, av description of one wheel will ,uponv a pivot pin or laxle 25 whi'chextends through the laterally spacedside portionsy of aU-shapedyarm or yoke 2 6, which affords bearing'siipport forthe wheel on each side thereof. The loopedy or closed end of the yoke,y shapedfarin4 26.` has alined apertures t therein for pivotally mounting'the same upon the projecting lend, portion 16aM ofthe front Y hoeshaft.. The yoke member is held in place f. `on the "extending shaft portion t 16a, and

against theend of the bearing 17 ,by a washer 27 and cotter ipin 28,- thelatter extending through the'end of the shaft as clearly shown vin Fig. 5. V'lheyoke 26 and its-wheel24 is adapted 'tobe swung vertically around the shaft extension 16al as an axis through the instrumentality of a lever 29,- which is pivotally mounted on a bolt or pin 30 carried by the horizontal portion of the U-shaped frame bar 3. The lever 29 is pivotally connected with the yoke or arm 26 byv a link 31, so that the yoke is swung upwardly or downwardly by .the forward and rearward movement of the lever.y The lever is provided with the usual ylocking dog 32, and'with latch mechanism 33 (Fig. 2) for actuating the latter. The locking dog is adapted to cooperate with suitable of the ground. When the two levers are swung forwardly the hoe wheels are lowered to comeintoengagement with the ground.

and by rocking the levers to thev forward notches of the sectors 35 the'weiglit of the supporting wheels 24 can be added to the weight of the machine forthe purpose of lforcing the hoe wheels down into hard soil.

Thesupporting wheels can also be adjusted to limitthedepth to which the hoes will pene` trate thesoil in portions of the field where so "g the ground is soft, and by differently adjusting the levers at theopposite sides of the implement, either end of the machine may be raised or 'lowered to meet the requirements of the unevenness of the ground.

It will be seen from the foregoing that the present construction provides a rotary hoe implement wherein the series of hoe wheels extend entirely from side to side of the machine with a substantially uniform spacing between all of the wheels, and ywherein a single type or design of hoe wheel is used throughout the entire implement. It will also be seen that the mounting of the swinging arms for the supporting wheels onthe outwardly extending ends of one of the hoe vshafts providesa durable,` staunch construction whichwill avoid all tendency of the .frame to warp or sag when the hoe wheels are raised to their transport positions. Such will be evident from the fact that the bearing member afforded by the shaft extension ltr" has supporting connection 'with the frame at both sides thereof, and also with theinteimediate portion of the frame through the intermediate bearingy bracket 2l.

I claim: y

1.'In a rotarylioe, the combination of a frame, a shaft extending transversely of said frame and having an end portion projecting beyond the side of the frame,'a.plurality of Yhoe wheels mounted on said shaft, a U- shaped. wheel. supporting arm-:having transf.

. verselyaligned apertures.. in'.l the oppositeand rear shafts extending transversely acrossl y said frame, and links operatively connected` with said levers and directly` oonnectedwith sides .offits looped end pivotally supported on.

the projecting. end: ofisaid shaft, support fing wheel mounted between the sides of 'said arm, and means for swinging said armto ad# just said frame and saidr supportingv wheel vertically relatively to ea'olivotlier. y

.2. In a rotary` hoe, the. combination.of' a frame coniprisingside frame members, front said frame and supported by saidside frame members, i'oe wheels mounted-on said shafts betweensaidside frame members,- one ofv said shafts having endvextensions projecting laterally beyond said side. frame members, swinging arms pivotally supported on said shaft extensions at` eachsideof the frame, supporting wheels mountedon said swinging arms, adjustinglevers pivotally mounted on said.l wheels supporting arms for swinging the latter to therebyv adjust the relative; vertical positions of said frame and said supporting wheels. Y

8l In la rotary. hoe*7 the combination of aframe comprising front'and-rear frame bars,

Ulshaped frame members conneetedfto said bars zit-the sides of saidframe, front and rear shafts extending transversely across said frame and supported bysaid. side frame members, intermediatebe'aring supports for;V the intermediateportions ofv said shafts, aVV pluralityof hoe wheels mounted on said shafts betweensaid side frame members, ,said

front shaft` having itsV ends extending out wardly beyond said side framemembers, arnis vpivotally mounted on said shaft extensions and adapted to swing throughan arcuate path in rear of said'shaft extensions, supporting wheels pivotally mounted on the swinging ends of saidarms, adjusting lever pivotally mounted oneach side of said frame,

links extending between vsaid adjusting levers and said swinging arms, and latch mechanism for holding said levers in differentV adjusted positions. l

e. in' a rotary hoe, the combination of a frame Comprising side frame members, frontand rearshafts extending*transversely 4across saidvframe andsupported by said side frame members, hoe wheels mounted kon said shafts between said side frame members, one ofxsaid shafts having extending end `portions proj ecting beyond said side -fraine members', yoke shaped swinging arms havingA laterally spacedl bearing apertures Iin the opposite arms of the .yoke pivotallyy mounted on said extending end portions, supportingv wheels pivotally mounted'in said yoke shapedarnis,

' and lever mechanism for swinging, said arms to thereby adjusty said frame and said supporting wheels vertically rrelatively toreach other. v v Y members, U-shaped swinging 'armsfhaving= substantiallyuniform spacing between-ads..

frame, front andrear shaftsxexltending transf 5.. In afrotary hoe, the combination ofv a frame comprisingiside frame. members, ,front and rear shaftsextending,transversely across v said frame andis'upported by said side,v frame.-Y Inembers, hoe wheelsmounted on saidfshaftsak betweensaidsideframemenihers, .onefofsaid shafts having extendingff end portionsprof. i jeoting outwardly beyondfsaid-y side.' fram' transversely alined apertures iny their looped 1., 75 L ends -pivotally mounted fonL said shaft extensions, Vvsupporting wheels pivotally.. mounted' between'` the lside portions .of said; U.-sliapedi l arms, adjusting leversunounted" on. said frame adjacent to the*sidesthereofgandlinlrs.:Sm

connecting said levers with said arms..

6. In ay rotary hoe, the combination of; a:

- frame comprising front andirear frame bars,

U-shaped side frame members Connectedto` the ends ofsaid frame bars :at eachsideoff. the implement,v a rU-shapedf intermediate y framev member extending betweenlsaidf frame bars interme'diately the V"sides 'ofi thev imple-.M men-t, .front and rear shafts extending en-z tirely acrosssaid frameffromside to.side.ioe..

' thereof and5 through openingszin said; side frame' members,v bearing members. 'mounted' on said latter `frame y members fon receiving n said shafts, intermediate bearing members.

mounte'don saidint-ermediate frameniember. andsupporting the intermediate portions` off said shafts,l a series ofhoewheels mounted;- ony eachA of saidshafts and extending con#k tinuously across `the width ofsaidframewitl having theirlooped'ends pivotally 'mounted on said shaftextensions, supporting-wheels; pivotally mounted betweenthe sidesiofffsaid Uelshapedf'arms, adjusting levers. pivotally mountedon said side frame membersflinksd Vpivotally' connecting said adjusting levers.

with .said-'swingingarms,` latching. sectors mountedon each ofvsaidlside frame members in association with said'levers, 'andlatching dogs on said levers adapted.tolengagef'said sectors. j 's 'i 7;'In a Vrotary hoe, thev combi-nation of a versely of saidframe, bearingineansadjacent tothe'sides of said frame forA su'ppoidsin'gtk A i endiportions of suchshafts, a plurality ofl hoe wheels mounted ons'aid shafts, the `wheels on one ofy said shafts being staggeredfwitl-i'l e.

ioEl

.rireference tothe wheels on the other of said shafts, and intermediate bearing supports for i i Vsaidshafts Vstaggered correspondingly with the st-agger of said wheels. ,n l

8.."In a rotaryy hoe, the combination of a frame, front and rear shafts extending from side to side ofv said frame, supporting meansy adjacent to the sidesof said frame for supporting'the endportions of said shafts, a plurality of hoe wheels mounted on said shafts, j the wheels on one of said shafts being offset with reference to the wheels on the other of, said\shafts, an intermediate support on saidv yframe for supporting the intermediate porwith reference to eachother.

tion of said frontshaft, and an intermediate support :on said frame yfor supporting the intermediate portion of said rear shaft, said intermediate supports being offset laterally ,"49.f In af rotary hoe, the combination of va frame, front and rear shafts extending transversely of said frame, bearing means adjacent Y to the sides of said frame forsupporting the end portions of said shafts, a series of hoe wheels on each of said shafts extending coni tinuously across the width ofthe frame with a substantially uniform spacing between ad- -jacent wheels, the wheels on saidrear shaft f `being staggered wit-hreference to the wheels having engagementwith said front shaft in onelongitudinalplane of the implement', and an Vintermediate bearing ysupport r-having ens gagement with said rear `shaft in a different l `'longitudinal plane.

f l0. In. arotary hoe,f-the combination of a frame comprising front'and rear frame bars, side' frame members connecting said bars at the sidesof ther implement, an intermediate .i frame member extending between saidbars at Y an intermediate point of the implement, front 45 ,",side to side of 'theframe, said sideframev and rear rshafts extending continuously .from

members vcomprising ybearing supports for 1 `V'the'end portionsV of said shafts, hoewheels vintermediate bearing'supportlforone of said? on each lof said shafts, the wheels, on 'one of said shafts being staggered *withreference to the 'wheels on the other of saidshafts, an

j shaftsprojecting laterally from said intermediate 'Y frame y member, and.' ,an i intermediateV vbearing support for the other of said shafts projecting,laterally` from said interiiiediatey iframe member intheopp'osite direction. f

1l. In a'rotary hoe,` the'combination of a vkframe'comprising front and rear frame bars,v side frame members extending between thek "ends ofsaid frame bars, front and rear shafts extending continuously fromside to side of said frame, .bearingk supports on said side frame members forvmounting the' end portions offsa'id shafts, a seriesof hoe wheels on each of said shaftsextending continuously aerossthe width of said `frame, with the wheels on said rear shaft staggered with reference tothe wheels on saidv front shaft and overlapping the latter wheels transversely of the implement, all of said hoe wheels being of substantially identical construction,

- and each wheel comprising a relatively long hub extending from bothsides ofthe wheel, the hubs of adjacent wheels contacting endy to end and thereby spacing thewheels on .their respective shafts, and two intermediate bearing members depending from saidframe bars for supporting the intermediate portions of said front and rear shafts, one of said intermediate bearing members engaging with its shaft between the hubs of adjacent wheels in one longitudinal plane of the implement, and the other intermediate bearing member en ygaging with its shaft between the hubs of adjacentwheels in another longitudinal plane kof the implement. lQyIna rotary hoe, the combination of a lframe comprising substantially parallel front andrear frame bars, U-shaped side frame kmembers having their ends secured to the end port-ions of said frame bars atv the opposite sides of the implement, an intermediate frame member of U-shape having its ends seycured to said Aframe bars iiitermediately the Isides of the implement, front and rear shafts extending continuously from side to side of l the implement, bearing members mounted on said side frame members for supporting the end portions of said' shafts, a series of hoe wheels on, each of said shafts extending continuously across the width of said frame, the wheels on said rear shaft being staggered with-reference to the wheels on said front shaft to be disposed substantially eqnidistantly therebetween, both series of wheels overlapping transversely of the implement, all of said wheels being of substantially identical construction and each wheel comprisling a-xrelatively long hub extending from both sides of the wheel, the hubs of adjacentwheels contacting end to end and thereby spacing said wheels substantially uniformly across the implement, an angularly shaped bearingbracket secured to one side of said intermediate frame member and projecting laterally therefromnfor affording an inter mediate bearing support for said front shaft between the hubs of two of its wheels, a similar bearing bracket secured to said intermediate frame member and projecting laterally in the opposite direction therefrom vfor alfording an intermediate bearing support for said rear shaft betweenthe hubs of two of its wheels. i

13. In a rotary hoe, the combination of a frame Comprising side frame members, front and rear shafts extending transversely across said frame and having bearing support adiacent to their ends on said side frame members,

'-,alseriesioi'loevlieels mounted on each `ofl said y 1' shaftsI between said: sdelfrarnemembers, the

lCn

i said `farms-:to fadjustfsaidfra-me and said supporting -wheels vertically relatively to eaclrf r" f ther,l and; intermediate bearing supports Ifor saidA Vshafts'. staggered correspondingly with 'tlestagger-offsaid'Wheels.

.iny name this? 21st In witnessxwliereof,`1 hereunto subscribe "day of January, 11928. Y .CARLF. IBAUER. 

